Warehouse-door.



PATENTED DEC. 81, 1907.

J. G. WILSON.

WAREHOUSE DOOR.

APPLICATION FILED FEB.10, 1906.

2 SHEETSSHEET l.

ATTORNEYS PATENTED DEC. 31, 1907. J. G. WILSON. WAREHOUSE, DOOR. APPLICATION FILED FEB. 10; 1906.

2 SHEETS-SHEET 2.

INVENFZJH UNITED STATES JAMES G. WILSQN,.OF NEW YORK, N. Y.

WAREHOUSE-DOOR.

Specification of,

Letters Patent. Patented Dec. 31, 1907.

ilp plication filed February 10. 1906. Serial No. 300,389.

To all whom it may concern: Be it known that I, JAMES (En WILSON, a subject of 'the'King of Great'Bri tain, and a resident of the city, countyf'and State of New York, havednvented certain new and useful Improvements in Warehouse-Doors of which -t e following ,is'a specificatiom- The present invention relates to a vertically swinging door, and its-object is to provide means for easily raising and lowering such a door, and for maintaining it in its open position without unduly straining it and putting it out of shape. I

In the accompanying drawings Figul e 1 is a' vertical transverse section on the line 11 of Fig. 3, showing the door in a closed position. Fig. 2 is a vertical transverse section showing the door partly open and preparatory to being raised into the position s own in dotted lines; Fig. 3 is a partially broken away front elevation showing the door closed; Fig. 4 is a horizontal transverse section on the line, 4-4' of Fig. 3, and Fig.- 5 is an enlarged fragmen-- tary detail vertical section through the lower corner of the door showing the antifriction roller and a portion of the chain lying in the guide grooves. a

Referrin to the drawings, 1 represents adoor, provided near its'lower end with ide} rollers 2, sliding in vertical guides3 forming a part of the door posts. 1 The guidesare preferably U-shaped n cross section, as shown.

" The door 1 comprises a single section or piece of the required dimensions to close the doorway. Near the up er end-of the .door

-rectly to links 4, they may be attached'to the 'rod 8 at any intermediate point between the two said links 4, and a similar arrangement can be made with the connections between links 5 and 6. Such a departure from the strai ht line in these link connections will not intei ere with the object of my invention. A rod may be used for the pivoted connections of link 56 and terminal connection on preferably 'at a point t rec-quarters of its" door frame or wall. I The rods serve also to brace thevarious links and to prevent buckling or sidewise displacement. One of the objects in the employment of rods instead of pintles for connecting the links 4, 5 and-6 is the provision for auxiliary links which may be p aced at any oint'along the width of the door, the top lin corresponding to links 6 being attached pivotally either to an anchor in the wall or to a horizontal rod similar to rods 8 and 9. Upon the bottom rail of my door I attach reinforcements 7 to strengthen it against the natural tendency to sag'when raised and lying in a horizontal position. Lugs 6 are attached to the upper part of the door frame to prevent link 6 from at any time assuming a position so near the vertical as to interfere with the pro er operation of the device- .This lug may, 0 course, be "attached to the link 6, instead of the door frame.

Counter-balance weights 18 are hung in the-usual manner on cords or chains 19 passingover pulleys 10, and attached at one end to the interior of the upperpart of the slide box 11, and at its other end to the lower portion of the door, preferably to the pintle which carries the guide roller 2. A counterbalance spring such as is well-known in the .art, may be employed in place of the weights.

i The operation of the device is as follows: The door, when inthe closed position shown in Fig. 1, 's pulled inwardly until it assumes-the position shown in full lines in Fig. 2.Then the door is raised into the position shown in dotted lines in Fig.2, by exerting an upward pull upon the lower portion' of the door by hand, or by mechanism acting directly on the roller. The door may be looked in this position, as hereinafterdescribed, in order to guard against accidental displacement7butsinthe constrg ction shown it will remainvin that position without'the use of additional retaining means. 1- it is desired-to close: the door the operation is reversed, the door bein lowered by pulling its lower edge downwar ,or by releasing the counterweights or spring pressure, thus permitting the door to dro its own weight.

The door may be L 00 ed when in its closed or in its raised positions, in any desired manner. In myjdrawings I have shown two spring pressed bolts 12, 12 mounted near the bottom of the door, adapted: automatically 1 holes 13 provided in, the ambs, near the top and'the bottom of the doorway. The bolts may be released by pulling hook 14 on the toggle joint 15 upward or downward, thus pulling back the bolts 12. A similar locking device may be provided near the top if desired, so as to double-lock the door in its closed position The particular advantage of my'construction is that it'enablesa door to be supported near its outer (upper) end when inthe horizontal, open position, Without-unduly straining it and in a-niann'er which will prevent sagging or bending under its own weight. The door when fully open will be practi cally resting upon the truss 4 along its whole width and will remain-perfectly flat while its lower end will be ke t in the same horizontal plane by reason 0 its reinforced bottom rails and the slide bolts 12, 1.2. An-- other advantage of my construction is that it enables the'door to be closed at the top,

instead of keeping it open as in some other 'constructions,1 n which single links are employed; an arrangement which makes it impossible for rain to enter in case the door. is

made to openoutwardly.

By looking my door automatlcally when in its openor raised position I revent an accidental dropping of the door y breaking of thecounterweight chains or otherwise; .Tclaimx a,

1. The combination of a door having zsliding and pivotal connections with slide-ways atthe sides of the same, and a pluralityof links pivotally connected in series, one end of the series being pivotally jointed to the door. andtheother end being pivotally jointed to the door frameabove the door, and means for holding the links away fromthedoor frame substantially as and for the puring-and pivotal connections with slide-ways means for holding .the support away from the .pose described.

at the sides of the same, and two or'more s'u ports, each composed of a .plurality of lin is, ivotallyconnected, the pivots being formel by rods connecting the various series, oneend of each series being pivotally joined tothe door and the other end of each series to the door frame or wall above the door, and

door frame, substantially 'pose described f, v

4 The combination of -a door having sliding and pivotal connections with slide-ways at .the sides of the same, and three links pivotally connected in series", 'oneendof the series being pivotally jointed to a truss attached to'the door and the other end to the as and for the purstantially as and forthe purposedescribed.

5. The combination of a doorhaving slidingfand. pivotal connections with slide-wa s pivotally connected in series, oneend of the series being pivotallyjointedtojthe door and the other end being pivotally jointedto the door frame above the door, and means for scribed.

door and the other end of each series to the purpose described.

7. The combination of a door having slidat the sldes of'the-same, and two or more each series being (pivotally joined to the door and the other en of each series to the door frameor wall above the; door, and means for described. v 8. The combination of a door having sliding and pivotal connections. with slide-ways pivotally connected, t e pivots beingformed by rods connecting the various series, one end of each series beingpivotally joined to at the sides ofthe same, and three lin s 1 holding the links away from the'door frame substantially as' and for the purpose deing and pivotal connections with slideeways sup orts, each composed of threelinkapiv 'ota ly connected, the pivots being formed by}- door frame or wall abovethe door, sub

6. The. combination of a door having slid. .ing and pivotal connections withslide-ways at the sides of the same, and two or more;- supports, each composed of three links," pivotally connected, the pivotsbe ing formed of rods connecting the various series, one end of each series being-pivotally jointed to the door frame above the door, as and for the rods connecting the various series, one endof holding the support away from the door; I frame, substantially as and for the purpose at the sides of thesamqand twoor more I supports, each com osed of three links,"

the door and the other'end of each series to the door frame or wall above the door, means for holdin the sup ort away from the door frame, an means or automatically locking the door when in its raised position, sub- In testimony whereof I ave hereunto signed my name in the presence'of two subscribing Witnesses. JAS. G, WILSON. Witnesses:

W. E. DUNCANSON,

. JOHN A. KEHLENBECK.

stantially as and for the pur ose described. 

